Knob-operable-latch mechanism.



PATENTED FEB. 5, 1907.

' H. e. VOIGHT. KNOB OPERABLE LATCH MECHANISM.

APPLIOATION FILED EAR. 23,1906.

UNITED STATES- BTENT OFFICE.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, AssroNoR T0 RUSSELL & ERWIN MANUFACTURING COMPANY, A CORPORATION 1 OF CONNECTICUT.

Specification of Letters Patent.

. Patented Feb. 5, 1907.

Application filed March 23.1906- Serial No. 307.642- 7 To all whom it may concern.-

Be it known that I, HENRY G. VOIGHT, acitizen of the United States, residin at New Britain, Hartford county, State of Connecticut, have invented certain new and useful Improvements in Knob-Operable-Latch Mechanism, of which the following is a full, clear, and exact description.

My invention relates to latch mechanism, and particularly to a construction for providing a substantially frictionless bearing for an operating-knob.

The invention is directed to that type of lock in which the knobs are carried by plates adapted to the opposite sides of a door and the latch mechamsm carried by one of these plates. In such mechanisms it has been found particularly difficult to provide a satisfactory bearing for the knobs.

My present invention is concerned with an improvement in bearings.

Figure 1 is a plan view and partial sectio illustrating my invention. Fig. 2 is a view illustrating detached members of a knob and shank with the removable bearing members. Fig. 3 is a sectional view of the main portion of the knob-shank. Fig. 4 is an end view of an extension portion of the knob-shank. Fig. 5 is a detail view of a series of balls and retainer. Fig. 6 is a detail view of a spring em loyed in the bearing.

, he plates 1 and 2 are adapted to the opposite sides of the door.- and connected by screws 3 and 4. The side late 2 has an extension 5, which is adapte to extend across the edge of the door.

The inner side plate 1 carries a suitable latch-slide and dogging mechanism. A suitable latch-bolt and connections are also rovided; but since these are not involve in this present invention it will be unnecessary to describe them.

6 and 7 are the inner and outer knobs car'- ried, respectively, by the inner and outer side plates and which are adapted to operate the mechanism.

8 is the shank of the outer knob, which is screw-threaded.

9 is an extension portion of the shank, adapted to be adjusted on the screw-threaded portion of the shankS.

10 is the rose-plate, which is secured to the side plate 2 an affords the stationary els ment of the bearing.

11 is an extended shank of the outer rollback, which cooperates with the latch mechanism, as described in another application filed by me. This extension 11 telescopes with the extension-shank 9 of the outer knob. The outer knob carries a cylinder-lock 12, as

indicated in dotted lines in Fig. 2, the plug of which' is connected by the spindle 13 with in the rose-plate.

21 1s a spring inter osed between theretainer 18 and the-shou der 14; 4

its

22 is the interior bearinfg-rin which cooperates with the series bal s in the retainer 18. v y

The bearings are adjusted by rotating the extension sleeve-like portion 9 upon the screw-threaded portion 8 of the knob-shank until the re uired ressure on the bearin s is attained. The s ank portion 9 is t on locked in place relatively to the shank portion 8for instance, by means of a screw 23,

taking into a notch or groove 24 in the shank portion 8.

The bearings may of course be rovidd with lubricating material, if desire so that their operation will be practically without 1 friction. The adjustment of the bearings can be effected as nicely as desired without having the parts bind.

The mechanism may be applied either to a right or left hand swing-door, it only being necessary to turn the outer knob aroundhalfwav before securing the mechanism in place.

What- I, claim is- 1. In a latch mechanism,- a knob-bearing comprising a rose-plate having oppositely- 4 arranged interior shoulders, a knob-shank projecting through said rose, 'a shoulder on the outer part ofsaid knob-shank, a-removpble and ad'ustable shoulder on the inner part ofsaid ob-shank, and two independgent sets of antifriction-bearings arranged between the interior shouldered portion of the rose and the shouldered portions of the knobshank, one of the latter being adjustable.

2. In a latch mechanism, a knob-bearing comprising-a rose-plate having an annular inwardly-projecting shoulder, a knob-shank having a shoulder near. the knobendof. said shank, and an internal removable and ad- 'ustable shouldeaon' said knob-shank, said ob-shank shoulders being arranged on opposite sides of the shoulder in the rose-plate, and antifri(-tion-bearings arranged between the latter and each of said knob-shank shoulders.

3. In a latch mechanism, a knob-bearing com rising a rose-plate, a knob, a twoart shan one of saidzparts being adjustable 0nitudinally relatively tothe other, and ballliear-ings around said shank, supported by said interior rose-plate shoulders and by the two parts of said shank.

- to the opposite sides of a door, knobs carried by saidp ates, a hollow knob-shank extending from one of said knobs, a transversel slotted extension adjustable thereon, a 1'0 1- back extension adapted to the slotted shank extension and longitudinally adjustable relatively thereto, and an independent s indle passing through said knob-shank an roll? ack extension.

HENRY G. VOIGHT. Witnesses:

M. s. WIARD, Y CHAS. E. RUSSELL. 

